I was so familiar with her that I recognized her voice ________ I pickedup the phone.
| A．the moment | B．after | C．before | D．while |
---Where is my pen?
--- I _____it.
| A．might lose | B．wouldn’t have lost | C．should have lost | D．must have lost |
The man ______ you are talking is in the next room.
| A．to whom | B．about whom | C．who | D．whom |
— I feel really disappointed not to have got that job.
— Don't worry. Maybe something better will ______.
| A．go by | B．take on | C．turn up | D．fall down |
We_____ the old scientist________ his contribution________ the country.
| A．admire；for；to | B．admire；at；to | C．respect；on；for | D．respect；on；at |
Every student is required to watch the teacher carefully before ___ the chemistry experiment.
| A．performing | B．taking | C．picking | D．having |